FYI, VQ. It's considered poor net etiquet to link to a pic hosted on someone else's servers. While it's shown here, it's still eating the bandwidth they pay for. As a site administrator, now, I assume you can understand where that can be frustrating for the person that pays said bandwidth.
We've actually had users link to images on other sites at Ars and to get even the other site will replace the image with gay porn or something along those lines. The gay porn then shows up in our forum.
I highly recommend saving the image and uploading it to your own host.